Error handling is a fundamental part of all programming languages. It is the way in which a developer prepares for the worst conditions by noticing and managing errors due to which the application could fail. These error conditions can occur due to various reasons, such as wrong input provided at runtime and more. In this chapter, we will cover various methods using which we can efficiently handle errors in Rust. We'll also check out the standard library that helps avoid problematic situations and thus avoid a complete failure of the Rust application.